又陷入了Unicode的泥潭，工作中遇到一個(gè)模塊需要從wchar_t* 轉(zhuǎn)到 char*，而且后續(xù)的工作都是基于Char*進(jìn)行的。網(wǎng)上找了下資料，代碼如下:

還有個(gè)搞人的東西是VS2005下的ifstream及ofstream函數(shù)，打開(kāi)帶有中文路徑的文件會(huì)失敗。

解決方案非常HACK，例如

非簡(jiǎn)體中文操作系統(tǒng)如下解決：

std::locale prev_loc = std::locale::global( std::locale("chs") ); // 沒(méi)有這一句的話(huà)，文件打開(kāi)失敗
std::ifstream file( "d://測(cè)試//test.txt" );
std::locale::global( prev_loc ); // 沒(méi)有這一句的話(huà)，文件中的中文無(wú)法輸出，且wcout輸出中文也失敗

簡(jiǎn)體中文操作系統(tǒng)下，

std::locale::global( std::locale("") ); // 沒(méi)有這一句的話(huà)，文件打開(kāi)失敗
std::ifstream file( "d://測(cè)試//test.txt" );

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#include <stdio.h>
#include <windows.h>
#include <locale.h>
#define BUFF_SIZE 1024

wchar_t * ANSIToUnicode( const char* str )
{
int textlen ;
wchar_t * result;
textlen = MultiByteToWideChar( CP_ACP, 0, str,-1, NULL,0 );
result = (wchar_t *)malloc((textlen+1)*sizeof(wchar_t));
memset(result,0,(textlen+1)*sizeof(wchar_t));
MultiByteToWideChar(CP_ACP, 0,str,-1,(LPWSTR)result,textlen );
return result;
}

char * UnicodeToANSI( const wchar_t* str )
{
char* result;
int textlen;
textlen = WideCharToMultiByte( CP_ACP, 0, str, -1, NULL, 0, NULL, NULL );
result =(char *)malloc((textlen+1)*sizeof(char));
memset( result, 0, sizeof(char) * ( textlen + 1 ) );
WideCharToMultiByte( CP_ACP, 0, str, -1, result, textlen, NULL, NULL );
return result;
}

wchar_t * UTF8ToUnicode( const char* str )
{
int textlen ;
wchar_t * result;
textlen = MultiByteToWideChar( CP_UTF8, 0, str,-1, NULL,0 );
result = (wchar_t *)malloc((textlen+1)*sizeof(wchar_t));
memset(result,0,(textlen+1)*sizeof(wchar_t));
MultiByteToWideChar(CP_UTF8, 0,str,-1,(LPWSTR)result,textlen );
return result;
}

char * UnicodeToUTF8( const wchar_t* str )
{
char* result;
int textlen;
textlen = WideCharToMultiByte( CP_UTF8, 0, str, -1, NULL, 0, NULL, NULL );
result =(char *)malloc((textlen+1)*sizeof(char));
memset(result, 0, sizeof(char) * ( textlen + 1 ) );
WideCharToMultiByte( CP_UTF8, 0, str, -1, result, textlen, NULL, NULL );
return result;
}
/*寬字符轉(zhuǎn)換為多字符Unicode - ANSI*/
char* w2m(const wchar_t* wcs)
{
int len;
char* buf;
len =wcstombs(NULL,wcs,0);
if (len == 0)
return NULL;
buf = (char *)malloc(sizeof(char)*(len+1));
memset(buf, 0, sizeof(char) *(len+1));
len =wcstombs(buf,wcs,len+1);
return buf;
}
/*多字符轉(zhuǎn)換為寬字符ANSI - Unicode*/
wchar_t* m2w(const char* mbs)
{
int len;
wchar_t* buf;
len =mbstowcs(NULL,mbs,0);
if (len == 0)
return NULL;
buf = (wchar_t *)malloc(sizeof(wchar_t)*(len+1));
memset(buf, 0, sizeof(wchar_t) *(len+1));
len =mbstowcs(buf,mbs,len+1);
return buf;
}

char* ANSIToUTF8(const char* str)
{
return UnicodeToUTF8(ANSIToUnicode(str));
}

char* UTF8ToANSI(const char* str)
{
return UnicodeToANSI(UTF8ToUnicode(str));
}

ANSI - Unicode UTF16 - Unicode UTF8 轉(zhuǎn)換